Britony Britony Combi SE Operating instructions

Combi 80

COMBINATION BOILER

Heating and Instantaneous Domestic Hot

Water

Fanned Flue system

Installation and

Operating instructions

--

Combi

100

These instructions are suitable for the following boilers :

Britony Combi 80

Britony Combi 100

CUSTOMER CARE

Chaffoteaux et Maury Ltd., as a leadrng manufacturer of domestrc and commercral water heatrng applrances, IS committed to provrdrng hrgh qualrty products and a

hrgh qualrty after sales servrce If it IS necessary to contact an engrneer, then telephone your local Chaffoteaux Service Centre. The number can be obtarned from

the leaflet enclosed rn the customer care pack wrth your boiler or by telephonrng the Chaffoteaux Customer Servrces Department at Telford.

Advrce on rnstallatron or servrcrng can also be obtarned by contactrng the Chaffoteaux Customer Servrces Department at Telford.

CUSTOMER SERVICES DEPARTMEN

Tel: 01952 222288

Fax. 01952 260915

GUARANTEE

The manufacturer‘s guarantee IS for 12 months from the date of purchase. The guarantee is voidable d the appliance IS not Installed rn accordance with the

recommendatrons made herern or rn a manner not approved by the manufacturer. To assrst us rn provrding you with an effrcrent after sales servrce, please return the

guarantee regrstration card enclosed wrth the borler wrthout delay

STATUTORY REQUIREMENTS

The rnstallatron of thus applrance must be carned out by a CORGI Regrstered person or other competent person and in accordance with the requrrements of the Gas

Safety (Installatron and Use) Regulatrons.

In addrtron, the rnstallatron must also comply wrth the current byelaws of Local Water Undertakrngs, Burldrng Regulatrons, IEE Winng Regulatrons, Local Authority

Burldrng Standards (Scotland) Regulatrons and the Safety Document 635 The Electncrty at work Regulatron.

It should also be carned out rn accordance with current edrtrons of the followrng Brrtrsh Standards Codes of practrce: BS 6891, BS 5440 parts 1 and 2, BS 5449 part

1, BS 7593, BS 6798, BS 5546, BS 4814, BS 7074 part 1 and 2, BS 7671 and BG DM2.

If there IS a possrbrlity of the Incoming marns water pressure exceedrng 10 bar then a surtable pressure lrmrtrng valve must be frtted

To comply wrth the Control of Substances Harmful to Health Regulatron 1988 we are requrred to provrde rnformatron on the following substance that IS contarned

wrthrn the applrance Descrrptron: Combustron Chamber Lrnrng

Material: Alumrno SIrcone Fibre

Precautions. Dunng servrcrng, keep the dust generation to a mrnrmum and avoid Inhaling any dust and contact with the skrn and eyes. Normal handlrng and use wrll

not present any drscomfort, although some people wrth a hrstory of skin complarnts may be susceptible to rrntatron. When disposing of the Irmng, ensure that rt IS

securely wrapped and wash hands after contact.

Page

CUSTOMER CARE ............

Guarantee ....................

Statutory Requirements .........

Contents .....................

INTRODUCTION ..............

DESCRIPTION ................

Location of components .........

TECHNICAL DATA .............

DIMENSIONS .................

OPERATION ..................

Domestic Hot Water Mode .......

Central Heating Mode ...........

INSTALLATION REQUIREMENTS

Location .....................

Flue .........................

Ventilation ....................

Gas Supply ...................

Electrical Supply ...............

SYSTEM GUIDANCE ...........

Showers .....................

Flushing and Water Treatment ....

System Controls ...............

Bypassand pump ..............

Expansion Vessel ..............

Filling Point ...................

. .

. . . .

. .

3

5

6

8

10

12

14

15

16

17

18

INSTALLING THE BOILER .....

Installation ...................

Fitting the horizontal flue ........

Making the electrical connections

COMMISSIONING AND TESTING

Pre-commissioning ............

Domestic Hot Water ...........

Central Heating ...............

Lighting the boiler .............

Post Commissioning ...........

Handing over to the Householder ........

USER’S INSTRUCTIONS .............

Control panel .......................

Isolating taps ........................

Switching on ........................

Hot water ..........................

Heating and hot water .................

Turn off the boiler ....................

INSTRUCTION FOR SETTING THE BUILT

IN CLOCK ..........................

Mechanical programer ................

Electronic programer .................

19

20

22

24

25

26

27

28

29

The BRITONY COMBI is a fully automatic, wall mounted, low water content combination boiler. It is a room sealed,

fan assisted, balanced flued appliance providing central heating and mains pressure domestic hot water on

demand. It has electronic ignition and is suitable for all modern electrical control systems. The boiler is designed

for sealed systems only and a circulating pump, expansion vessel together with a pressure gauge and safety valve

are included within the boiler.

The standard horizontal flue kit is suitable for lengths 300 mm minimum to 610 mm maximum and includes an

elbow adapter that can be rotated through 360”. The horizontal flue can extend up to 3 metres using 1 metre flue

extension kits. 45” and 90” flue bends are also available as accessories.

The BRITONY

available. COMBI is also suitable for concentric vertical flueing and twin pipes. Adapters and accessoiries are

The boiler is packed in two cartons:

1. the boiler

2. the flue assembly and the pre installation kit

Location of components

1. Air pressure switch

2. Steel chassis complete with expansion vessel

3. Main heat exchanger

4. Combustion chamber

5. Multi- gas burner assembly comprising ignition and

ionisation electrodes

6. Automatic air separator and automatic vent

7. Heating circuit flow switch

8. Pump

9. Electrical box

10. DHW circuit flow switch

11. Overheat thermostat

12. Gas valve assembly

13. Sealed chamber

14. Flue hood with fan

15. Hot water control thermistor

16. Central heating control thermistor

17. Three way valve

18. CH Flow isolating valve

19. Three position Selector switch

20. User’s instruction panel.

21. Heating flow temperature adjustment

22. Green indicator - Power ON

16 - \ 21 22 i6

Fig. 3 20

23. Orange indicator - Burner ON

24. Red indicator - Lock out / fiame failure

25 Reset button

26. Pressure gauge

27.Gas service tap

28. Water service tap

31. Secondary heat exchanger

32. By pass

33. By pass adjustment screw

29. CH Return isolating valve

30. Pressure relief valve

Britony combi type

Appliance category . . . . . . . . . .

80 100 Britony combi type 80 100

cat II 2H 3+ cat II 2H 3+

Natural gas G20

C/H circuit pressures

Min operating in bar

in lb/in2

Max operating in bar

in lb/in*

DHW flow rates

0.7 0.7

10 10

2.5 2.5

36.3 36.3

@30”CinI/min . . . . . . . . . . . 11.1 13.4

in gal/min . 2.45 2.95

@ 35°C in I/min 9.54 11.48

in gal/min 2.10 2.53

DHW circuit pressures

Min operating in bar 0.1 0.1

in lb/in2 1.45 1.45

Max operating in bar 10 10

in lb/in* 145 145

Flow limitor rate in Vmin 10 12

Gas rate

Maximum in m3/h 2.74

Maximum in ft3/h 97

Inlet pressure

3.34

118

Nominal in mbar . . 20 20

Nominal in in wg . . . 8 8

Burner pressure

Nominal in mbar . 11 12.8

Nominal in in wg . . 4.4 5.12

Burner injector diamater

Natural gas G20 in mm . 1.23 1.26

PROPANE L.P.G. G31

Gas rate

Maximum in kg/h . . 2.00

Maximum in ft3/h . . 4.41

Inlet pressure

Nominal in mbar 37

Nominal in in wg . 14.8

Burner pressure

Nominal in mbar 35

Nominal in in wg . . 14

2.42

5.34

37

14.8

30.4

12.16

Britony combi type 80 100 Britony combi type 80 100

BUTANE L.P.G. G30 Safety discharge

Gas rate in bar . . . . . 3 3

Maximum in kg/h 2.04 2.45 in lb/in*. . . . . . . 43.5 43.5

Maximum in Lbs/h . 4.50 5.40 Expansion vessel

Inlet pressure Pre-charge pressure in bar 0.7 0.7

Nominal in mbar . 28 28 Pre-charge pressure in lb/in* 9.4 9.4

Nominal in in wg . 11.2 11.2 Net capacity at 3 bar in liter 5.44 5.44

Burner pressure Adjustable by-pass

Nominal in mbar 26,7 24 Minimum flow rate in I/h 100 100

Nominal in in wg IO,7 9.6 Minimum flow rate in gal/min 0.36 0.36

Maximum flow rate in I/h 700 700

Burner injector diamater Maximum flow rate in gal/min 2.56 2.56

LPG G30 and G31 in mm 0.72 0.76

Burner injector diamater Electrical characteristics

LPG G30 and G31 in mm 0.72 0.76 Supply . 230~ 50 Hz

Consumption 150w 150w

Compartment ventilation not required Protection . IP 44 IP44

Fuse+1 . . 2A 2A

Fusen”2 . . 1.25A 1.25A

External controls 24v 24v

Outer case dimensions :

- W&h : 440 (mnmum space required 450)

- Height :

-Depth: . iii

Without packaging :

Tails diameter

~ 1

Safety valve outlet 015mm

J Heating flow 022mm

K D.H.W. flow 015mm

L Gas supply 022mm

M Cold water inlet 015mm

N Heating return 022mm

Safety valve axe

Fig. 4

q

I

Minimum clearances :

- Both sides 5mm

- Above casing 170 mm

- Below casing 200 mm

- Front (for servicing) 500 mm

- Front (in operation) 5 mm

TYPE Cl2 or C42

Fig. 5 Sizes in mm

The boiler is suitable for the 3 flue types :

l

typeC12 C22orC42

l

type C 32 xx or C 32 xy

TYPE C32 xx TYPE C32 xy

Domestic Hot Water Mode

To be able to supply hot water, the selector switch 19 Fig. 6

must be in either on k or ‘1111 .? position. This will be

confirmed by the green indicator light 0 22 Fig. 6

When a tap or shower is turned on, the flow of mains water,

above 2 litres per min., will activate the DHW flow switch 10

Fig 7 and allow the 3 way valve 17 Fig. 7 to move to the

DHW position. The pump can now circulate primary water

heated by the main heat exchanger through the secondary

heat exchanger.

The first stage solenoid 12a Fig. 7 and safety solenoid 12c

Fig. 7 open together to allow gas to the burner. The ignition

sequence begins and a continuous high speed spark ignites

the gas. As soon as a flame is detected the orange indicator

bulb 0 23 Fig. 6 will light and the second stage solenoid 12b

Fig. 7 opens to allow the full gas rate. If a flame is not

detected, after 8 seconds, the security solenoid closes and

shuts off the gas. The red lockout indicator bulb a 24 Fig. 6

will light, The domestic hot water temperature is controlled

by the hot water control thermistor 15 Fig. 7 and the central

heating control thermistor 16 Fig. 7. This system anticipates

the changes of temperature in the secondary heat exchanger

16

-\ $1 22 26

Fig. 6 20

and ensures accurate temperature regulation

When the tap is closed the burner is extinguished and the pump

stops. The boiler will now stay in the hot water mode for three

minutes to maintain temperature to ensure a fast response in the

event of a subsequent hot water demand.

Priority will be given to a demand for hot water. This will interrupt

the central heating for the duration of hot water delivery.

Central Heating Mode

To be able to supply hot water, the selector switch 19 Fig. 6

must be in either on

.e

or

‘Ill1

FF position. This will be

confirmed by the green indicator light 0 22 Fig. 6

When there is a demand for heating (either from the room

thermostat or the clock) and the boiler temperature control is

calling for heat. The pump starts and at a flow rate of 4 Itr/min

the central heating flow switch operates allowing the ignition

sequence to begin. The first stage solenoid 12a Fig. 7 and

safety solenoid 12c Fig. 7 open together to allow gas to the

burner. The ignition sequence begins and a continuous high

speed spark ignites the gas. As soon as a flame is detected the

orange indicator bulb b 23 Fig. 6 will light. After 45 seconds the

second stage solenoid 12b Fig. 7 opens to allow the full gas

rate. If a flame is not detected, after 8 seconds, the security

solenoid closes and shuts off the gas. The red lockout indicator

bulb * 24 Fig. 6 will light.

The central heating flow temperature is controlled by the

central heating control thermistor 16 Fig. 7. The boiler has been

designed to minimise cycling and will not attempt to relight for at

least 3 minutes after the boiler thermostat has been satisfied.

When the room thermostat is satisfied the burner will switch off

and the pump will remain running for a further 3 minutes before

it to stops.

NB

It is possible to override the 3 minute delay by pressing the

RESET button 25 Fig. 6.

Location

The boiler can be installed on any suitable internal wall.

Provision must be made to allow the correct routing of the

flue and siting of the terminal to allow the safe and efficient

removal of the flue products. The appliance may be

installed in any room, although reference must be made to

the IEE regulations if it contains a bath or shower. A

compartment or cupboard may be used provided that it has

been purpose-built or modified for the purpose. Provision

must be made for permanent ventilation. Detailed

recommendations are given in BS 5440 pt 2. If it is

proposed that it is installed in a timber framed building then

reference must be made to British Gas Document DM2, or

advice sought from CORGI.

Flue

The boiler must be installed so that the flue terminal is

exposed to the free passage of external air at all times. It

must not be allowed to discharge into another room or

space such as an outhouse or closed lean-to. The

minimum acceptable clearances are shown below:

- A Directly below an opening, window, etc 300 mm

- B Below gutters soils pipes or drain pipes 75 mm

- C Below eaves 200mm

- D Below balconies or car port roof

- E From a vertical drain pipe or soil pipe

- F From an internal or external corner 300 mm

- G Above ground roof or balcony level 300 mm

- H From a surface facing the terminal 600 mm

- I From another terminal facing the terminal 600 mm

-J From an opening into the dwelling when

under a car port 1200 mm

- K Vertically from a terminal on the same wall 1500 mm

- L Horizontally from a terminal on the same wall 300 mm

- M fixed by the flat roof ubbink rolux 4GM flue terminal

- N fixed by a pithed roof ubbink rolux 4GM flue terminal

200 mm

75 mm

It may be necessary to protect the terminal with a guard if it is

accessible and could be damaged. Reference should be made to

the Building Regulations for guidance. Suitable guards may be

obtained from the following maufacturer:

Quinnel Barret & Quinnel Wireworks

Old Kent Road

London SE1 5 1 NL

Tel: 0171 639 1357

Ventilation

The room in which the boiler is installed does not require specific

ventilation. IF IT IS INSTALLED IN A CUPBOARD OR

COMPARTMENT PERMANENT VENTILATION IS NOT

REQUIRED FOR COOLING PURPOSES. If vents are installed,

they must communicate with the same room or be on the same

wall to outside air.

outside air.

Gas Supply

The gas installation and soundness testing must be in

accordance with the requirements of BS 6891.The boiler

requires: 2.74 m3/hr and a 22 mm supply. Ensure that the pipe

size is adequate for the demand including other gas

appliances on the same supply.

Electrical Supply

The appliance requires an earthed 230V - 50 Hz supply and

must be in accordance with current I.E.E. It must also be

possible to be able to completely isolate the appliance

electrically. Connection should be via a 3 amp fused double-

pole isolating switch with contact separation of at least 3 mm

on both poles. Alternatively, a fused 3 Amp. 3 pin plug and

unswitched socket may be used, provided it is not used in a

room containing a bath or shower. It should only supply the

appliance.

The boiler is suitable for sealed systems only. The maximum

working pressure for the appliance is 10 bar. All fittings and

pipework connected to the appliance should be of the same

standard. If there is a possibility of the incoming mains

pressure exceeding 10 bar, particularly at night, then a

suitable pressure limiting valve must be fitted.

The boiler is designed to provide hot water on demand to

multiple outlets within the property. If there is a requirement

for greater demands, for example if the property has several

bathrooms and cloakrooms, a vented or unvented hot water

storage system may be used.

Showers

Any shower valves used with the appliance should be of a

thermostatic or pressure balanced type. Refer to the shower

manufacturer for performance guidance and suitability.

guidance. For more information on the use of corrosion

inhibitors, flushing and descaling agents, advice can be

sought from the manufacturers of water treatment products

such as: Betz Dearbon Ltd

Foundry Lane

Widnes

Cheshire

WA8 8UD

Tel: 0151 424 5351

Fernox Manufacturing

Britannica Works

Clavering

Essex

CBll 4QZ

Tel: 01799 550811

System Controls

Flushing and Water Treatment

The performance of the appliance could be impaired by

system debris or the effects of corrosion. The system must be

flushed thoroughly to remove metal filings, solder, machining

oils and other fluxes and greases before connecting the

boiler. If it is an existing system, an appropriate flushing and

descaling agent should be used. Refer to BS 7593 (1992) for

The boiler is electrically controlled and is suitable for most

modern electronic time and temperature controls. The

addition of such external controls can be beneficial to the

efficient operation of the system. The boiler connections for

external controls are 24V and so only controls of 24V or that

have voltage free contacts should be used.

By pass and Pump

The boiler is fitted with a pre-adjusted by pass. Although adjustment is not normally necessary, the by pass can be reset by

turning screw ( D Fig. 9 ) anticlockwise to open the by-pass using the chart below for guidance.

If used on a system with thermostatic radiator valves, the flow rate with the thermostatic valves closed should be adjusted to

at least 100 I/hr.The chart below indicates the residual head of the pump available for the system.

D

Head and flow rate available

m Hz0 I<- MInImum flow rate

5

4

3

2

1

0

0 100 200 300 400 600 600 700 800 90010001100I/h

Fig. 10

Expansion Vessel Filling Point

The expansion vessel is pre-charged to 0.7 bar (10 lb/in*). Provision must be made to be able to charge the system on

The vessel is suitable for systems up to 145 litres capacity. commissioning and to make up any subsequent pressure loss.

For systems of greater capacity an additional expansion The method of connection must utilise approved equipment

vessel will be required. Refer to the chart below and BS 7074 and must comply with the water regulations. A filling loop can

pt 1 or BS 5449. be so installed as to be hidden beneath the boiler.

Pressure ’

System capacity chart

80

100

120 140 180 180 200 220 240 260

Litres

Fig. 11 Fig. 12

Please check that you are familiar with the installation

requirements before commencing work.(section 6)

Installation

The installation kit included with the flue components

comprise following items :

- Hanging bracket

- A paper template (showing the dimensions of the boiler with

5 mm side clearances, fitting instructions and commissioning

instructions)

- Connection tails

- Screws and wall plugs

- Connection washers and filters

- Pre-piping jig

- Installation manual

Method of positionning the boiler on the wall.

The paper template can be used to ensure the correct

positioning of kitchen cabinets etc. It also details the

commissioning instructions.

The paper template has to be fixed to the wall and used to fix

the position of the hanging bracket, the centre for the flue

hole and, if required, the fixings for the pre-piping jig.

Drill and plug the wall and secure the hanging bracket using

the screws provided. Remove the boiler from its packaging as

shown in Fig. 13 and remove the outer case as shown in

Fig.1 4. Place the boiler on the wall on the hanging bracket.

If required, there is space for all piping to pass behind the

Fig. 13

Fig. 14

-

--

boiler. Using Fig. 15 for reference, connect the gas and water

pipes to the valves located at the base of the appliance using

the tails provided. There is a 190 mm space between the

valves and the wall to make these connections.

Provision must be made to fill and recharge the system

Fig. 15

Safety valve outlet

Heating flow 015mm

022mm

pressure. This can be achieved using a filling loop or other

methods approved by the local water authority.

The pressure relief should terminate below the boiler over a

tundish or 22 mm pipe (see I fig 15) which should in turn

discharge safely outside the premises. Care should be taken

that it does not terminate over an entrance or window or

where a discharge of heated water could endanger occupants

or passers by.

The system should be carefully checked for leaks, as frequent

refilling could cause premature system corrosion or

unnecessary scaling of the heat exchanger.

Fitting the Horizontal Flue

The instructions for the vertical and biflux (twin pipe) flue

options are included with the relevant adaptor kits.

The standard flue supplied with the appliance is suitable for

lengths from 300 mm minimum to 610 mm maximum. This

means for rear flueing, the standard kit will accommodate a

maximum wall thickness of 490 mm, and for side flueing a

maximum wall thickness of 477 mm. This takes into account

the minimum appliance side clearances of 5 mm.

K D.H.W. flow 015mm If the fixing is a rear exit flue, the template provides the

L Gas supply 022mm position of the centre for drilling the flue hole with a core drill.

M Cold water inlet 015mm If the flue is a side exit installation then calculate the position

of the hole with a slope of 5 mm / metre to the outlet.

N Heating return 022mm

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